The SDM data model is the interface that
tells the SDM engine how to get the data to be displayed. The SDM
data model is an abstract description of a set of nodes and links
between nodes. Nodes and links have a user-defined type (also
called the “tag”), and a set of named properties.
A default data model is supplied as class IlvDefaultSDMModel and you can also develop
your own data model.
The classes provided for data models are in the package ilog.views.sdm.model.
For a discussion of the available data model classes and advice on
writing your own, see Using and writing data models.